New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Marketing Assistant	Pascale Cartrain	Germany	1 2 3 4 5
2	Accounting Manager	Matti Karttunen	England	1 2 3 4 5
3	Owner	Pascale Cartrain	England	1 2 3 4 5
4	Accountant	Paul Henriot	Spain	1 2 3 4 5
5	Marketing Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
6	Marketing Manager	Antonio Moreno	Argentina	1 2 3 4 5
7	Marketing Assistant	Antonio Moreno	USA	1 2 3 4 5
8	Sales Consultant	Jaime Yorres	Spain	1 2 3 4 5
9	Accountant	Jaime Yorres	France	1 2 3 4 5
10	Sales Associate	Jaime Yorres	France	1 2 3 4 5
11	Sales Consultant	Georg Pipps	Argentina	1 2 3 4 5
12	Sales Associate	Pascale Cartrain	Argentina	1 2 3 4 5
13	Accounting Manager	Jaime Yorres	England	1 2 3 4 5
14	Sales Manager	Patricio Simpson	Italy	1 2 3 4 5
15	Marketing Manager	Pascale Cartrain	Bulgaria	1 2 3 4 5
16	Marketing Manager	Hanna Moos	Spain	1 2 3 4 5
17	Accountant	Pascale Cartrain	France	1 2 3 4 5
18	Accountant	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
19	Marketing Manager	Elizabeth Lincoln	Germany	1 2 3 4 5
20	Owner	Patricio Simpson	Bulgaria	1 2 3 4 5
21	Sales Associate	Patricio Simpson	USA	1 2 3 4 5
22	Accountant	Paul Henriot	Spain	1 2 3 4 5
23	Sales Agent	Jaime Yorres	Brazil	1 2 3 4 5
24	Sales Agent	Matti Karttunen	Germany	1 2 3 4 5
25	Marketing Assistant	Jaime Yorres	Brazil	1 2 3 4 5
26	Sales Representative	Antonio Moreno	Argentina	1 2 3 4 5
27	Marketing Assistant	Hanna Moos	England	1 2 3 4 5
28	Accountant	Antonio Moreno	Argentina	1 2 3 4 5
29	Accounting Manager	Hanna Moos	England	1 2 3 4 5
30	Sales Associate	Elizabeth Lincoln	USA	1 2 3 4 5
31	Owner	Matti Karttunen	Brazil	1 2 3 4 5
32	Sales Manager	Paul Henriot	France	1 2 3 4 5
33	Marketing Manager	Georg Pipps	Spain	1 2 3 4 5
34	Marketing Manager	Georg Pipps	England	1 2 3 4 5
35	Accounting Manager	Pascale Cartrain	Italy	1 2 3 4 5
36	Marketing Manager	Matti Karttunen	Germany	1 2 3 4 5
37	Sales Agent	Hanna Moos	Spain	1 2 3 4 5
38	Sales Representative	Patricio Simpson	Bulgaria	1 2 3 4 5
39	Sales Manager	Howard Snyder	Spain	1 2 3 4 5
40	Sales Representative	Hanna Moos	France	1 2 3 4 5
41	Marketing Manager	Paul Henriot	Austria	1 2 3 4 5
42	Marketing Manager	Hanna Moos	Bulgaria	1 2 3 4 5
43	Sales Associate	Howard Snyder	Germany	1 2 3 4 5
44	Accounting Manager	Paul Henriot	Germany	1 2 3 4 5
45	Accountant	Pascale Cartrain	Bulgaria	1 2 3 4 5
46	Accountant	Georg Pipps	USA	1 2 3 4 5
47	Sales Consultant	Jaime Yorres	Argentina	1 2 3 4 5
48	Sales Consultant	Howard Snyder	Austria	1 2 3 4 5
49	Owner	Patricio Simpson	Argentina	1 2 3 4 5
50	Sales Consultant	Matti Karttunen	Germany	1 2 3 4 5
51	Sales Agent	Georg Pipps	Spain	1 2 3 4 5
52	Sales Associate	Elizabeth Lincoln	Germany	1 2 3 4 5
53	Sales Agent	Paul Henriot	Austria	1 2 3 4 5
54	Sales Agent	Jaime Yorres	Austria	1 2 3 4 5
55	Sales Associate	Antonio Moreno	Spain	1 2 3 4 5
56	Sales Representative	Paul Henriot	Spain	1 2 3 4 5
57	Owner	Jaime Yorres	Argentina	1 2 3 4 5
58	Sales Manager	Pascale Cartrain	England	1 2 3 4 5
59	Accountant	Hanna Moos	Brazil	1 2 3 4 5
60	Accountant	Hanna Moos	Italy	1 2 3 4 5
61	Marketing Assistant	Patricio Simpson	Austria	1 2 3 4 5
62	Sales Representative	Patricio Simpson	Germany	1 2 3 4 5
63	Sales Representative	Hanna Moos	Spain	1 2 3 4 5
64	Sales Associate	Paul Henriot	Brazil	1 2 3 4 5
65	Owner	Jaime Yorres	Germany	1 2 3 4 5
66	Marketing Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
67	Accounting Manager	Hanna Moos	Spain	1 2 3 4 5
68	Accountant	Matti Karttunen	Germany	1 2 3 4 5
69	Sales Agent	Howard Snyder	Spain	1 2 3 4 5
70	Accounting Manager	Georg Pipps	Argentina	1 2 3 4 5
71	Marketing Manager	Hanna Moos	Brazil	1 2 3 4 5
72	Marketing Manager	Antonio Moreno	England	1 2 3 4 5
73	Accounting Manager	Howard Snyder	Brazil	1 2 3 4 5
74	Marketing Assistant	Antonio Moreno	Brazil	1 2 3 4 5
75	Owner	Elizabeth Lincoln	Austria	1 2 3 4 5
76	Marketing Manager	Hanna Moos	Brazil	1 2 3 4 5
77	Sales Consultant	Paul Henriot	Bulgaria	1 2 3 4 5
78	Sales Manager	Patricio Simpson	Austria	1 2 3 4 5
79	Sales Representative	Matti Karttunen	Brazil	1 2 3 4 5
80	Accountant	Antonio Moreno	Spain	1 2 3 4 5
81	Sales Consultant	Patricio Simpson	Spain	1 2 3 4 5
82	Sales Consultant	Patricio Simpson	Bulgaria	1 2 3 4 5
83	Sales Representative	Patricio Simpson	Italy	1 2 3 4 5
84	Sales Representative	Howard Snyder	Spain	1 2 3 4 5
85	Accountant	Patricio Simpson	Italy	1 2 3 4 5
86	Marketing Manager	Patricio Simpson	Germany	1 2 3 4 5
87	Sales Agent	Patricio Simpson	Argentina	1 2 3 4 5
88	Sales Agent	Pascale Cartrain	Spain	1 2 3 4 5
89	Sales Consultant	Paul Henriot	Spain	1 2 3 4 5
90	Accountant	Georg Pipps	USA	1 2 3 4 5
91	Sales Manager	Georg Pipps	Brazil	1 2 3 4 5
92	Sales Consultant	Matti Karttunen	Austria	1 2 3 4 5
93	Accounting Manager	Elizabeth Lincoln	France	1 2 3 4 5
94	Sales Agent	Patricio Simpson	Austria	1 2 3 4 5
95	Sales Associate	Elizabeth Lincoln	France	1 2 3 4 5
96	Accounting Manager	Howard Snyder	Austria	1 2 3 4 5
97	Sales Consultant	Pascale Cartrain	England	1 2 3 4 5
98	Accounting Manager	Paul Henriot	England	1 2 3 4 5
99	Marketing Manager	Patricio Simpson	Germany	1 2 3 4 5
100	Sales Agent	Antonio Moreno	Italy	1 2 3 4 5


...271 272 273 274 275 276 277 278 279 280 ... Item 270001 to 271000 of 300000 Page: of 300 GoPage size:

Sort Ascending
Sort Descending
Clear Sorting
Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

Support & Learning Resources

Find Assistance

Submit a support ticket if you have an active license or trial
Post in the forum if you don't have access to support

Virtualization

Related Resources

Support & Learning Resources

Find Assistance